Veterinary ecraseur



(No Model.)

P. P. HOPFMANN.

VETERINARY EGRASEUR.

No. 591,403. Patented Oct. 12,1897.

lw B Wiigzsszs I Q 7 I uu'mu, wAsHmc'ron. a. c.

and useful'Veterinary Ecraseur, of which the severed, is provided, forcooperation with the UNITED STATES PATENT OFFICE.

FERDINAND F. HOFFMANN, OF BROOKVILLE, PENNSYLVANIA,

VETERINARY EC RASEU R.

SPECIFICATION forming part of Letters Patent No. 591 ,403, dated October12, 1897.

Application filed August 28, 1896.

To all whom it may concern:

Be it known that I, FERDINAND F. Horn- MANN, a citizen of the UnitedStates, residing at Brookville, in the county of Jefferson and State ofPennsylvania, have invented a new following is a specification.

This invention relates to surgical instruments for veterinaryovariotomical purposes, and aims to provide an ecraseur which willenable the operation to beperformed expeditiously and with safety to thepatient, since hemorrhage is avoided by crushing the arterysimultaneously with the cutting.

The instrument will be described at length hereinafter, and itsadvantages will appear more fully as the nature of the improvement isdisclosed and understood.

In the drawings, Figure 1 is a side elevation of an ecraseur constructedin accordance with this invention. Fig. 2 is a view at right angles toFig. 1, partly in section. Fig. 3 is a detail perspective view of theactive end of the sheath. Fig. 4is a detail view of the hook.

Similar numerals of reference indicate corresponding parts in all thefigures of the drawmgs.

- A tube 1 forms the body portion of the instrument and terminates atone end in a sheath 2 and is provided at the opposite end with a handle3. The sheath consists of a guide or keeper having parallel sides 4 and5, of which the former only is extended to form a flat blade forattachment to the extremity of the tube, the outer side 5 and the endwalls of the sheath terminating short of the end'of the tube to form anopen space, for a purpose hereinafter explained. The walls 4 and 5 arerespectively constructed to form a smooth cutting edge and a roughenedor serrated cutting edge. A stem '6 is fitted for longitudinal movementin the tube, and the front end is provided with a hook 8, which isadapted to operate inand extend beyond the sheath, the stem beingactuated to draw the hook within the sheath by means of a handle 9,fitted upon a threaded portion 7 of the stem and adapted to bear againstthecontiguous rear extremity of the tube. The hook, which is adapted toengage an artery or cord to be Serial No. 6%,196. (No model.)

stem has been operated by the rotation of thehandle 9 to complete thesevering operation the handle may be grasped and drawn manually backwardin order to expose the hook in the space between the keeper portion ofthe sheath and the contiguous front end of the tube to prevent particlesof tissue carried into the sheath by the hook from interfering with therextension thereof for subsequent use. It will be understood that withthis, as with other devices of the same class, the object is to severanartery in such a manner as to prevent subsequent hemorrhage, and hencethe contiguous smooth and serrated cutting-faces, of which the formerserves to sever the artery, while the latter contuses the same at apoint contiguous to the cut.

Having thus described the invention, what is claimed as new is-- 1. Anecraseur having an operating-rod terminating at one end in a hookprovided with cutting and contusing edges, a guide for said rodterminating at one end in a sheath having cutting and contusing edges tocooperate with those of the hook, said sheath comprising a keeperportion carrying said cutting edges and adapted to receive the hook, andan open-sided portion arranged in rear of the keeper portion and adaptedto expose the hook when drawn rearwardly through and beyond the keeperportion, and means for operating the rod, substantially as specified.

2. 'An ecraseur having a tubular body portion in which is fitted alongitudinally-movable operating rod provided with means whereby it maybe actuated, said operatingrod terminating at its front end in a hookhaving opposite smooth and serrated cutting edges, and a sheath carriedby the tube forming the body portion, having an inclosed or keeperportion adapted to receive the hook and provided with smooth andserrated edges for cooperation therewitlnaud having one side wall ofsaid keeper portion extended and attached to the tube, the opposite sideof the sheath being open to form a space exceeding the hook in length,whereby the hook may be to wholly exposed by drawing the same rear-

